Ovarian Cancer Treatment With a Liposome Formulated mRNA Vaccine in Combination With (Neo-)Adjuvant Chemotherapy (OLIVIA)
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|ClinicalTrials.gov Identifier: NCT04163094|
Recruitment Status : Recruiting
First Posted : November 14, 2019
Last Update Posted : December 5, 2019
|Condition or disease||Intervention/treatment||Phase|
|Ovarian Cancer||Drug: W_ova1 Vaccine||Phase 1|
This is a first-in-human, open label phase I intra-patient dose escalation study (vaccination 1 and 2) in OC patients with primary disease eligible for SoC treatment with neo-adjuvant chemotherapy, i.e. 3 cycles carboplatin/paclitaxel, interval surgery and 3 additional cycles carboplatin/paclitaxel.
OC patients will be vaccinated prior and during (neo)-adjuvant chemotherapy with the W_ova1 vaccine, which includes 3 OC TAA RNAs. Vaccines will be administered by means of intravenous injection. A total of eight vaccinations will be administered with intra-patient dose escalation planned for the first two doses, i.e. the first vaccine will contain 50 µg total RNA and the subsequent seven vaccines will contain the target dose of 100 µg total RNA. Dose reductions/modifications to 50, 25 and 14.4 µg are allowed per protocol.
The first two vaccinations will be administered before the start of neo-adjuvant chemotherapy with 7 day time lag (+/- 2 days) between each vaccination. The subsequent 6 vaccinations are scheduled 15 days (+/- 3 days) after the start of each cycle of chemotherapy to avoid overlap with immune-suppressive corticosteroid premedication as well as with the direct effects of the chemotherapy. Patient evaluation will be performed before, during and after vaccination, including history, physical examination, ECOG performance status and toxicity scoring using NCI CTCAE 5.0 toxicity grades. Blood sample collection for bio monitoring by means of a vena puncture will occur before each vaccination. During the two-step dose escalation blood samples will also be collected 6 hours and 24 hours after vaccination. Blood samples will be analyzed for biochemistry, hematology and tumor marker CA-125.
To determine the systemic immune response (primary objective), PBMCs are obtained by venous blood collection at baseline (100 mL) and twice during study related treatment period (60 mL). In addition, three leukaphereses (or 100 mL blood draw alternatively) and four blood draws for ctDNA analysis are scheduled during the trial for each patient.
To determine the intratumoral immune response (secondary objective), tumor material will be collected before vaccination by an image-guided biopsy and during surgery (standard treatment).
The first [18F]FB-IL2 PET-CT (exploratory objective) will occur at baseline and the second [18F]FB-IL2 PET-CT as close to the surgery as possible. These study procedures are optional and patients can still participate in the trial without the [18F]FB-IL2 PET-CT.
In case of premature drop-out, patients will be asked to undergo the leukapheresis (or 100 mL blood draw alternatively) and if possible / feasible, additional tumor material sampling at time of the planned interval surgery.
|Study Type :||Interventional (Clinical Trial)|
|Estimated Enrollment :||10 participants|
|Intervention Model:||Single Group Assignment|
|Intervention Model Description:||This is a first-in-human, open label phase I study.|
|Masking:||None (Open Label)|
|Official Title:||Ovarian Cancer Treatment With a Liposome Formulated mRNA Vaccine in Combination With (Neo-)Adjuvant Chemotherapy|
|Actual Study Start Date :||November 25, 2019|
|Estimated Primary Completion Date :||February 2023|
|Estimated Study Completion Date :||December 2023|
Experimental: Treatment arm
Patients will receive 8 W_ova1 vaccinations before and during neoadjuvant chemotherapy and adjuvant chemotherapy.
Drug: W_ova1 Vaccine
Patients will be treated with a W_ova1 vaccine that includes 3 OC TAA RNA-LPX products.
- Change from baseline W_ova1 vaccine antigen-specific T cells in the peripheral blood (systemic induction / expansion of W_ova1 vaccine antigen-specific T cells). [ Time Frame: A PBMC collection is planned at baseline, before start treatment. A further PBMC collection is scheduled after 5 vaccinations before surgery. The post-vaccination PBMC collections are scheduled at approx. 14 days and 2.5 months after final vaccination. ]Number of patients with de novo or increased systemic immune responses (based on the ELISpot Data Analysis Tool 1.0) in the post-vaccination PBMC sample compared to baseline PBMC sample to at least one of the three vaccine antigens
- Change from baseline W_ova1 vaccine antigen-specific T cells in the tumor (Intratumoral induction / expansion of W_ova1 vaccine antigen-specific T cells) [ Time Frame: Tumor material is collected at baseline by biopsy and compared to tumor material collected during standard-of-care cytoreductive surgery (mid-vaccination, week 12) ]Number of patients with a significant increase (p<0.05) in CD8-cell density (CD8-cells / mm2 cancer epithelium [cytokeratin-positive area]) in tumor (pre- and post-treatment biopsy)
- Progression free survival [ Time Frame: Up to 2 years from disease diagnosis ]PFS defined as the number of patients alive without any progress or recurrence (local or regional, or distant) and death due to any cause
- Safety and tolerability of repetitive doses of the W_ova1 vaccine in combination with carboplatin/paclitaxel [ Time Frame: Up to 28 days after last vaccination ]Number of patients with AEs, and SAEs
- Change from baseline intratumoral visualization of CD25+ T cells using [18F]FB-IL2 PET-CT [ Time Frame: Baseline [18F]FB-IL2 PET-CT compared to [18F]FB-IL2 PET-CT before standard of care cytoreductive surgery (mid vaccination, week 12) ]Intratumoral visualization of CD25+ T cells by the [18F]FB-IL2 PET-CT imaging, expressed as standardized uptake values, compared to CD25+ T-cell infiltration in matching tumor material
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04163094
|Contact: Sterre T. Paijens, MDemail@example.com|
|Groningen, Netherlands, 9713GZ|
|Contact: Sterre T. Paijens, MD +31625649882 firstname.lastname@example.org|
|Principal Investigator:||H. W. Nijman, MD/PhD||University Medical Center Groningen, UMCG|